It's funny how I can actually think of, maybe, 2 to 3 bands from the nu-metal era that I wouldn't be totally embarrassed to qualify as genuinely good bands, but Rage Against the Machine is the only real rap-metal act that I can immediately recall even being worth a damn.

Right. Korn were another one trick pony. Linkin Park just cover themselves don't they? Re-work the same 8 songs for different genres? Who else is there?